6350640521 has 16 divisors (see below), whose sum is σ = 6637813248. Its totient is φ = 6069816000.

The previous prime is 6350640509. The next prime is 6350640533. The reversal of 6350640521 is 1250460536.

It is an interprime number because it is at equal distance from previous prime (6350640509) and next prime (6350640533).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6350640521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6350660521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2488196 + ... + 2490746.

It is an arithmetic number, because the mean of its divisors is an integer number (414863328).

Almost surely, 2^6350640521 is an apocalyptic number.

6350640521 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6350640521 is a deficient number, since it is larger than the sum of its proper divisors (287172727).

6350640521 is a wasteful number, since it uses less digits than its factorization.

6350640521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 6350640521 is about 79690.9061374006. The cubic root of 6350640521 is about 1851.8501598742.

The spelling of 6350640521 in words is "six billion, three hundred fifty million, six hundred forty thousand, five hundred twenty-one".